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Home >> Chevrolet >> 2003 >> Chevy Express H2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Controls Self-Diagnostics - 4.3L) >> Diagnostic Tests >> DTC P0106: Map System Performance >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

The numbers below refer to the step numbers in the diagnostic procedure.

  1. 5

    This step tests the MAP sensor's ability to correctly indicate barometric pressure.

  2. 7

    This step tests the MAP sensor's ability to respond to an increase in engine vacuum.

  3. 9

    This step tests for a proper MAP sensor pressure with an applied vacuum.

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